An Online Catalogue is a database composed of bibliographic records describing the books and other materials owned by a library or library system
accessible via the World Wide Web.

An Online Union Catalogue is a database that contains records about materials of multiple libraries and is accessible via the World Wide Web.
In other words, it is a joint catalogue for several libraries.

In a catalogue and in a union catalogue you will find:

the bibliographic description of the items it contains,

the location (library) where the items are held, as well as their classification number, so as to find them on the shelves.

Electronic

The "Kallipos" Repository is a website that collects books, learning aids and objects produced within the framework of the project
"Hellenic Academic Electronic (Text)books”. The repository aims at the systematic recording, organization and long-term preservation of the (text)books and
the learning objects of the academic community. The Repository collection is also available from AUTh Online Library Catalogue.

Useful Links

ATTENTION

When searching ebooks, using AUTh Library Unified Search Engine, users must perform the same search in the tab
"Catalog" as well as in the tab "Articles, Journals" in order to retrieve a more complete list of the available resources. Searching each ebook publisher separately
will give the best results.

Printed

The University Online Public Access Catalogue (OPAC) includes the journals the University subscribes to as well as some journals
the subscription to which has ceased but there are still available back issues. The Catalogue includes the journals of all the departmental libraries
of the University. Apart from the bibliographic record of the journals, the Catalogue also provides information about holdings, including information
about which library holds each journal, as well as the volumes and the issues acquired. The latter information is not available for all journals yet.
AUTh Library Unified Search Engine gives users the ability to search both printed and electronic journals of the University as well as HEAL-Link
subscriptions of electronic journals.

The Faculty of Philosophy Subject Library holds most printed journals of the libraries of the Faculty of Philosophy. For each title
the catalogue includes information about the ISSN of the journal, its frequency, the volumes, the issues and its subscription status. The catalogue
also includes information about missing items. If the journal is available in electronic format, a link to the full text is given.

The National Union Catalogue of Scientific Journals of the Greek National Documentation Center
provides users with unique tools to search for a specific journal or to view the entire journal collection of a Greek library. The catalogue contains bibliographic data
on both printed and digital journals which are available at Greek libraries. The collections cover all disciplines, while for every journal title information is given
about the collection of the library with that particular journal. Currently, 201 libraries with a total of 98.825 journal titles are included in the catalogue.
ESKEP is supported by the National Network of Science and Technology Libraries with 147 member libraries.

Periodicals Archive Online is a major archive that makes the backfiles of scholarly periodicals in the arts, humanities and social sciences
available electronically, providing access to the searchable full text of hundreds of titles. The database spans more than two centuries of content, 37 key subject areas,
and multiple languages.

ProQuest is a collection of databases providing access to nearly 12.500 journals with over 9.700 available in full text.
It also provides access to nearly 2 million dissertations and theses. The subject areas covered are: The Arts, Business, Dissertations and Theses, History,
Language and Literature, Social Sciences.

ECO includes all the original contents and images of articles as well as the bibliographic information for all journals. The database
allows you to view the abstracts and full-text articles from journals to which your library or institution subscribes. It includes over 4,000 journals
and over 1,3 million records covering the period from 1995 to the present. Subjects include literature, philosophy, education, psychology, language,
social sciences, history science, fine arts, library science, business, economics, et. al. The database is available via OCLC First Search service.

AUTh Library Unified Search Engine gives users the ability to search both printed and electronic journals of the University as well as HEAL-Link
subscriptions of electronic journals. Users can search by journal and article title and have access to the full text of the items they are interested in. The service also
offers advanced search.

Periodicals Archive Online is a major archive that makes the backfiles of scholarly periodicals in the arts, humanities and social sciences
available electronically, providing access to the searchable full text of hundreds of titles. The database spans more than two centuries of content, 37 key subject areas,
and multiple languages.

ProQuest is a collection of databases providing access to nearly 12.500 journals with over 9.700 available in full text.
It also provides access to nearly 2 million dissertations and theses. The subject areas covered are: The Arts, Business, Dissertations and Theses, History,
Language and Literature, Social Sciences.

ProQuest Education Journals gives users access to over 760 top educational publications, including more than 600 of the titles
in full text. The coverage spans the literature on primary, secondary and higher education as well as special education, home schooling and adult education.
Many titles are indexed in the ERIC database.

This database provides abstracts and indexing for more than 640 titles, with over 540 titles available in full text. Many titles
are indexed in PsycINFO. Coverage ranges from behavioral, clinical, cognitive, developmental, experimental, industrial and social psychology, along with
personality, psychobiology and psychometrics.

This database includes over 535 titles, with more than 310 available in full text. Disciplines represented range from anthropology,
sociology, political science to communication, education, criminology, demography, economics and more.

Access to the bibliographic and citation database of Elsevier, with simultaneous search to more than 21000 titles of scientific journals,
to more than 90000 e-books and to the World Wide Web, and possibility of automatic linking to the full text of the articles of the subscribed titles to HEAL-Link.
Scopus database includes also citation indexes in all the sectors of science and technology.

Art Index Retrospective: 1929 -1984 provides users access to over half a century of art literature covering fine, decorative, and commercial art.
Content includes high-quality indexing of nearly 600 publications, many of which are peer-reviewed, and citations of over 25,000 book reviews.

The Philosopher’s Index™, produced by the Philosopher’s Information Center, is a current and comprehensive bibliographic database covering scholarly
research in all major fields of philosophy. The Philosopher’s Index, considered the most thorough index of journal literature on the subject, features author-written
abstracts covering scholarly research published in journals and books, including contributions to anthologies and book reviews. It contains research published since 1940
including over 680 journals from more than 50 countries with content representing a variety of languages.

ECO includes all the original contents and images of articles as well as the bibliographic information for all journals.
The database allows you to view the abstracts and full-text articles from journals to which your library or institution subscribes. It includes over
4,000 journals and over 1,3 million records covering the period from 1995 to the present. Subjects include literature, philosophy, education, psychology,
language, social sciences, history science, fine arts, library science, business, economics, et. al. The database is available via OCLC First Search
service.

E-print Network is a vast, integrated network of electronic scientific and technical information created by scientists and research
engineers active in their respective fields, all full-text searchable. E-print Network is intended for use by other scientists, engineers, and students
at advanced levels. It is a gateway to over 35,300 websites and databases worldwide, containing over 5.5 million e-prints. E-prints are scholarly and
professional works electronically produced and shared by researchers with the intent of communicating research findings to colleagues. They may include
preprints, reprints, technical reports, conference publications or other means of electronic communication.

Journal Citation Reports® offers a systematic, objective means to critically evaluate the world's leading journals, with quantifiable,
statistical information based on citation data. By compiling articles' cited references, JCR helps to measure research influence and impact at the journal and
category levels, and shows the relationship between citing and cited journals. Available in Science and Social Sciences editions.

The National Archive of PhD Theses provides access to the full text of PhD theses (32.271) from all Higher Education Institutions (HEIs) in Greece
as well as PhD theses awarded to Greek scholars by foreign HEIs and certified by the Hellenic NARIC. The National Documentation Centre of Greece (EKT) is
the organization responsible, by law, for the collection, development and maintenance of the National Archive of PhD Theses.

ProQuest Dissertations & Theses Global is the world's most comprehensive collection of dissertations and theses from around the world,
spanning from 1743 to the present day and offering full text for graduate works added since 1997, along with selected full text for works written prior to 1997.
It contains a significant amount of new international dissertations and theses both in citations and in full text.

It is an international organization dedicated to promoting the adoption, creation, use,
dissemination, and preservation of electronic theses and dissertations (ETDs). It provides access to 4 million theses and dissertations from collaborating institutions.

OATD.org aims to be the best possible resource for finding open access graduate theses and dissertations published around the world.
Metadata (information about the theses) comes from over 1000 colleges, universities, and research institutions. OATD currently indexes 2,963,527 theses and dissertations.

DART-Europe is a partnership of research libraries and library consortia who are working together to improve global access to European research theses.
DART-Europe is endorsed by LIBER (Ligue des Bibliothèques Européennes de Recherche), and it is the European Working Group of the Networked Digital Library of Theses
and Dissertations (NDLTD).